Why Does Stainless Steel Rust?
Answer: a. The surface of stainless steel has accumulated dust containing other metal elements or attachments of foreign metal particles. In moist air, the condensed water between the attachments and stainless steel connects the two to form a micro battery, causing electricity Chemical reaction destroys the protective film, which is called electrochemical corrosion.
b. The surface of stainless steel adheres to the organic juice (such as melon, vegetable, noodle soup, sputum, etc.), which forms organic acid in the presence of water and oxygen, and the organic acid will corrode the metal surface for a long time.
c. The surface of stainless steel is adhered to contain acid, alkali, and salt substances (such as alkaline water and lime water splashing on the decoration wall), causing local corrosion.
d. In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, and nitrogen oxide), it will form sulfuric acid, nitric acid, and acetic acid liquid spots in contact with condensed water, causing chemical corrosion
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